Dead plants
Animals
Sunlight
Soil
Living and non-living things in an area and their interactions
Flow of energy from one organism to another in a food web
Cycling of nitrogen between soil, water, and the atmosphere
Conditions an animal needs to grow and reproduce
Boundaries
Resilience
Scale
Food webs
Centimeter
Kilometer
Meter
All of the above
only found in forests
a collection of organisms and materials that interact
the place where animals live
unchanging, fragile systems that are easily damaged